package summer_vacation.xuejiahua;

import java.util.Scanner;

/**
 * Created by Administrator on 2015/8/30.
 */
public class java_27 {

    public static void main(String [] args) {
    Scanner sc = new Scanner(System.in);
    System.out.println("请输入a b c：");
    double a,b,c;
    a=sc.nextDouble();
    b=sc.nextDouble();
    c=sc.nextDouble();
    double d=b*b-4*a*c;
    if ( d == 0 ){
        System.out.println("x="+(-b)/(2*a) );
    }
    else if ( d< 0){
        System.out.println("无解");
    }
    else{
        System.out.println("x1="+(-b+Math.sqrt(d))/(2*a) );
        System.out.println("x2="+(-b-Math.sqrt(d))/(2*a) );
    }
}
}
